Rose plant JACshur

ABSTRACT

A shrub class rose plant having bright red, simple flowers, vigorous upright habit of growth, dark green leathery foliage, resistance to powdery mildew and rust, high production of flowers throughout the growing season and ease of propagation by hardwood cuttings.

The present invention relates to a new and distinct variety of roseplant of the shrub class which was originated by me by crossing thevariety Razzle Dazzle, U.S. Plant Pat. No. 3,995, with an unnamedseedling.

The primary objective of this breeding was to produce a new rose varietyhaving the bright red color of Razzle Dazzle and its dark leatheryfoliage combined with the shrub habit and heavy flower production of theunnamed seedling. The objective was substantially achieved along withother desirable improvements as evidenced by the following uniquecombination of characteristics which are outstanding in the new varietyand which distinguish it from its parents, as well as from all othervarieties of which I am aware:

1. Bright red, simple flower

2. Vigorous upright habit of growth

3. Dark green leathery foliage

4. Resistance to powdery mildew and rust

5. High production of flowers throughout the growing season

6. Ease of propagation by hardwood cuttings

Asexual reproduction of this new variety by budding and by hardwood andsoftwood cuttings, as performed at Wasco, Calif., shows that theforegoing characteristics and distinctions come true to form and areestablished and transmitted through succeeding propagations.

The accompanying illustration shows typical specimens of the vegetativegrowth and flowers of this new variety in different stages ofdevelopment, depicted in color as nearly true as it is reasonablypossible to make the same in a color illustration of this character.

The following is a detailed description of my new rose cultivar withcolor description using terminology in accordance with the RoyalHorticultural Society (London) Colour Chart, except where ordinarydictionary significance of color is indicated.

Parentage:

Seed parent--Razzle Dazzle, U.S. Plant Pat. No. 3,995.

Pollen parent--Unnamed seedling.

Classification:

Botanical--rosa hybrida.

Commercial--Shrub.

FLOWER

Observations made from specimens grown in a garden environment in Somis,Calif. in Sep. 1990.

Blooming habit: Continuous.

Bud:

Size--1 inch when the petals start to unfurl.

Form--Short, pointed ovoid.

Color--When sepals first divide, the bud color is Red Group 44B, withpetals lightening to white at the petal bases. When half blown, theupper sides of the petals are Red Group 44A; and the lower sides of thepetals are Red Group 44B, with the petals becoming lighter to white atthe petal bases.

Sepals--Color: Green Group 138C. Surface texture: Covered with finehairs. There are three lightly appendaged sepals. There are twounappendaged sepals with hairy edges.

Receptacle--Color: Green Group 137C. Shape: Apple. Size: Small(1/4"×1/4"). Surface: Glandular and hairy.

Peduncle--Length: Short (11/2to 2"). Surface: Prickly, glandular. Color:Medium Green. Strength: Stiff, erect.

Bloom:

Size--Medium. Average open size is 31/2 to 4 inches.

Borne--Singly and several together, in pyramidal clusters.

Form--When first open: Cupped. Permanence: Flattens.

Petalage--Number of petals under normal condition: 5 to 10.

Color--The upper side of the petals is Red Group 44A. The reverse sideof the petals is Red Group 44B, changing to white at the point ofattachment to the peduncle. The base of each petal has a white half moonat the point of attachment. The major color on the upper side is RedGroup 44A.

Variegations--None.

Discoloration--No change in general tonality at the end of the firstday: No change at the end of the third day.

Fragrance--Slight.

Petals:

Texture--Thick, leathery.

Shape--Round.

Form--Flat.

Arrangement--Imbricated. No Petaloids in the center.

Persistence--Drop off cleanly.

Lastingness--On the plant: Short, 3 to 4 days. As a cut flower: Short, 3to 4 days.

Reproductive parts:

Anthers--Size: Medium. Quantity: Many. Color: Yellow. Arrangement:Regular around styles.

Filaments--Color: Reddish brown.

Pollen--Color: Lemon yellow.

Styles--Color: Reddish.

Stigmas--Color: Greenish white.

Form: Shrub.

Growth: Very vigorous, upright, branching.

Foliage:

Number of leaflets on normal mid-stem leaves--5.

Size--Large (6"×5").

Quantity--Abundant.

Color--New foliage: Reddish. Old foliage: Dark green.

Leaflets:

Shape--Broadly oval.

Texture--Upper side: Leathery, glossy.

Edge--Serrated.

Serration--Single, small.

Petiole rachis--Color: Reddish.

Petiole underside--Rough.

Stipules--Medium--3/4"; bearded.

Disease resistance--Resistant to mildew and rust under normal growingconditions at Somis, Calif. Moderately susceptible to blackspot in testsin Baton Rouge, La.

Wood:

New wood--Color: Reddish. Bark: Smooth.

Old wood--Color: Green. Bark: Smooth.

Prickles:

Quantity--On main canes from base: Ordinary. On laterals from maincanes: Ordinary.

Form--Medium, hooked downward.

Color when young--Red.

Small prickles:

Quantity--On main stalks: Few. On laterals: Many.

Color--Brown.

I claim:
 1. A new and distinct variety of rose plant of the shrub class,substantially as herein shown and described, characterized particularlyas to novelty by the unique combination of its brigh red, simple flower,its vigorous upright habit of growth, dark green leathery foliage,resistance to powdery mildew and rust, high production of flowers, andits ease of propagation from hardwood cuttings.